Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION , MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; M USICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 91 Clocks and watches and parts thereof 91 02 Wrist-watches, pocket-watches and other watches, including stop-watches, other t 91 02 11 91 02 11 00 Commodity Code Description 91 02 11 00 00 -- With mechanical display only 91 02 12 00 00 -- With opto-electronic display only 91 02 19 00 00 -- Other 91 02 21 00 00 -- With automatic winding 91 02 29 00 00 -- Other 91 02 91 00 00 -- Electrically operated 91 02 99 00 00 -- Other